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Monday, 29 October 2007

Rustenburg. A town in Transvaal province, Republic of South Africa, and the location of numerous allu­vial diamond diggings. It is one of the most prolific of the proclaimed areas in the Transvaal and in the Republic of South Africa. Annual pro­duction is approximately 100,000 car­ats.

Rutania. A trade name for synthetic rutile.

ruw. A Dutch word meaning rough. It is used by Dutch and Belgian dia­mond cutters to mean a natural. See